Question

92) Which of the following is true: a) Humans are the only primate that sheds copious tears. b) Neanderthals had curved phalanges c) Flint is associated with coal deposits. d) Scientists have conclusively proved that human activity is responsible for global warming e) Humans are biologically adapted to a savannah habitat. 93) The humeral-femoral index when applied to Lucy indicates a) her arms were long compared to a Chimps b) her pelvis was like that of Chimp. c) she was adapted to both arboreal and terrestrial environments. d) sexual dimorphism e) all of the above 94) A major difference between the Plesiadapiforms and the Prosimians is a) the prehensile tail b) sexual dimorphism c) the post orbital bar d) estrus e) sent markings 95) Many of the bog bodies found in England and Scandinavia a) appear to have been killed ritually. b) appear to be low class, working people. c) are preserved by tannic acid. d) a and c e) b and c 96) Base pairs are a) Adenine/Thymine and Guanine/ Cytosine. b) monogamous couples inhabiting a home base. c) A key to the understanding of DNA replication d) a and c e) none of the above

Answer 1

92)

a) True. Crying evolved in humans as an emotional expression that signals distress and promotes prosocial behaviors in members of the same species. Further, shedding tears may influence the mood of the crier and his/her outlook on life primarily as a consequence of fulfillment of the proposed signaling function of tears.Weeping is uniquely human and while animals do have the ability to shed tears, they do not have the same functions as in humans.

b)False. Curved phalanges indicate climbing ability which is prominent in chimpanzees and was apparent in australopithecines. It was not apparent in Neanderthals.

c)False. Flints were used to make stone tools and start fires.

d)True. Global temperature rise, warming oceans, shrinking ice sheets are due to human activity such as burning fossil fuels which have lead to heat trapping emissions being at very high levels. There is overwhelming scientific concensus.

e)False

93)

c)Results of the humerofemoral index calculate the overall body proportion of an organism which can then be compared to others. The higher the index value, the longer the arms and the more likely a primate is to be arboreal.

Most arboreal primates have ratios close to 100. For example, the mean ration for the common chimpanzee is 97.8. Humans average a lower ratio at approximately 71.8. The ratio of the famous A. afarensis “Lucy” is intermediate between modern humans and chimpanzees at 84.6

94) c) Plesiadapiforms do not have the post orbital bar while prosimians do.

95) d) a and c. Violent deaths and a lack of clothing has led archaeologists to believe that the persons were killed and deposited in the bogs as a part of a widespread cultural tradition of human sacrifice or the execution of criminals.They are also heavy with tannins, a group of naturally occurring chemicals used in tanning leather. The tannins preserve organic materials such as human bodies, including the soft tissues and the contents of the digestive tract.

96) d) a and c. Adenine/ Thymine pair forms two hydrogen bonds and pairs up while Guanine/Cytosine form three hydrogen bonds. DNA Replication relies on the base pairing to make complimentary strands. On the template strand, the Adenines binds with only Thymine and vice versa. Similarly, Guanine always binds with Cytosine.